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FRED L. BICGAIIAN, OF INDIANAPOLIS, INDIANA.

BOILER FLUE CLEANER.

SPECIFICATION forming part of Letters Patent No. 365,836, dated July 5,1887.

Application filed September 25, 1886. Serial No.21-i,513. (No model.)

To all whom it may concern.-

Be it known that I, FRED L. McGAtIAN, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a new and useful Improvementin Boi1erFlue Oleaners,ofwhich the following is a specification.

My invention relates to improvements in a boiler-flue cleaner for whichLetters Patent No. 313,509 were issued to me March 10, 1885. Saidflue-cleaner is of that class in which the line is cleaned by means ofajet of steam discharged through a suitable nozzle, by

means of which it is directed against and along the interior walls ofthe flue, the discharge of the steam into the flue being controlled bymeans of a valve which is automatically closed by the steam-pressurewhen the cleaner is removed from the flue.

The objects of my present improvements are to provide guides by whichthe nozzle may be easily brought to its proper position in the mouth ofthe flue, to more perfectly exclude cold air from the interior of theflue while the cleaner is in operation.

The accompanying drawings illustrate my invention.

Figure 1 represents a side elevation, a portion of the valve-chamberbeing broken away. Fig. 2 is a front elevation of the nozzle and guide.Fig. 3 is a central longitudinal section.

A is the nozzle, having a series of narrow annular dischargeports, Z) Z)I) b.

B is a tapered annular plate adapted to slide over the nozzle, andconnected by four arms (not shown) with a central hub, c, which issecured by a nut, (Z, to the valve-stem 0.

F is the valve, which is opened by the backward movement of the plate B,thus allowing the steam to-pass from the steamchamber h to the ports I).

H is a tube connecting the steam-chamber h with a T-conpling, i, to onebranch of which is connected the hose j, which leads from the boiler orother source of steam-supply. A rod, 70, is secured in the other branchof the coup ling and serves as a handle.

The parts thus far described are all shown in my above-mentioned LettersPatent.

For the purpose of guiding the nozzle while entering the line, I formintegral with the plate 13 a conical frame consisting 011" theconverging bars Z Z Z Z, projecting beyond the n0zzle. The arrangementis such that said bars are between the ports b, and they therefore allowthe stcannjet to pass freely between them.

For the purpose of makinga closejoint between the face of ring B and theend of the flue, and therefore more thoroughly exclnding cold air, Iinsert in the face of the ring another annular ring, I, of rubber orother elastic packing. V

The hosej is secured to coupling 11 by means of a clamp, N 0 P, whichwill form the subject-matter of another application. Steam, beingadmitted to the hose-tube II and steamehamber h, is retained therein byvalve F. The conical guide-frame, consisting of the converging bars Z,is inserted and pushed into the open end of the boiler-flue until theface of the elastic ring I comes in contact with and eiiectually-closesthe end of the tube. A quick thrust forward now causes the nozzle toslide through plate 13 until arrested by the flange 8. Valve F, beingrigidly secured by means of its stem to the plate B, is thus opened, andthe steam flows in annular jets through the ports b. As soon as thenozzle is withdrawn, valve F is closed by the steam-pressure.

I claim as my invention 1. In a flue-cleaner of the class described, thecombination, with the nozzle having annular dischargeports and thevalve-actuating plate, of the guide-frame consisting of a series ofconverging bars secu red to said plate, arranged between said ports andprojecting beyond said nozzle, substantially as and for the purposespecified.

2. In a flue-cleaner, the coml'iination, with the nozzle A,valve F, andplate B, of the series of converging bars formed integral with saidplate, substantially as and for the purpose specified.

3. In a fluecleaner, the combination of the plate B, having bars Z, andthe annular elastic packing-ring I, for the purpose specified.

FRED L. MOGAHAN.

Witnesses: H. 1. H001),

V. M. H001).

